US Bridges

Jackson Creek Road over West Plum Creek

FairPosted for load

Douglas County, Colorado · 0.25 MI W CO RD 105 · Structure no. DOU038-08.45

Built
1951
74 years old
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
28 ft
1 main span
Daily traffic
644
2021 count
Owner
County
County Highway Agency

About this bridge

Jackson Creek Road over West Plum Creek is a steel stringer/multi-beam or girder carrying Jackson Creek Road over West Plum Creek in Douglas County, Colorado. It was built in 1951, so it is 74 years old, older than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 644 vehicles a day, roughly 4% of them trucks, projected to reach 862 by 2041. The structure is 28 ft (8.5 m) long and 24 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesJackson Creek Road
CrossesWest Plum Creek
Location0.25 MI W CO RD 105
RouteCounty Highway 0
CountyDouglas County
StateColorado
Coordinates39.34756, -104.97107
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating22 US tons
Inventory rating16.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span26 ft (8 m)
Deck width24 ft (7.2 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic644 (2021)
Projected traffic862 by 2041
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Jackson Creek Road over West Plum Creek built?

It was built in 1951, making it 74 years old in 2025.

What condition is Jackson Creek Road over West Plum Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2025.

How much traffic does Jackson Creek Road over West Plum Creek carry?

About 644 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is Jackson Creek Road over West Plum Creek?

The structure is 28 ft (8.5 m) long with a longest span of 26 ft (8 m) and a deck 24 ft wide.

Who owns Jackson Creek Road over West Plum Creek?

It is owned by the County Highway Agency.